Fabrication, structures and molecule detection of gold films coated on gamma-Fe2O3@SiO2 ellipsoid ordered arrays

作者：Zhang, Xin; Niu, Yongan^*; Zhao, Jiupeng^*; Li, Yao

来源：Colloids and Surfaces A: Physicochemical and Engineering Aspects , 2017, 520: 343-347.

DOI：10.1016/j.colsurfa.2017.01.070

• Ellipsoids
• Ordered arrays
• Sputtering
• Interfaces
• Raman
• Thin films

Surface-enhanced Raman scattering (SERS) is a high resolution approach for organic molecule detections. Under a controllable magnetic field, gamma-Fe2O3@SiO2 ellipsoids could be forced by the solvent evaporation and assembly to shape the gamma-Fe2O3@SiO(2)ellipsoid ordered arrays. Sputtering the thin gold film onto the ordered arrays, we could fabricate the gold/ellipsoid ordered complex films. The outstanding SERS could be observed using 4-mercaptobenzoic acid (MBA) as the probe molecule, where the detected limit concentration is lower than 10(-7) mol/L.

• 出版日期2017-5-5
• 单位北京化工大学; 哈尔滨工业大学